Custom Building Products

Polyblend Plus Sanded Grout

All colors (cement-based) · US · not yet reviewed

Short answer

Light foot traffic: 16 hours after application.
Immersion-ready: 14 days after application.

Start the clock

When did you apply it?
Outdoors, temperature
Where?
Thickness

Stated times

  • Light foot traffic16 hours
  • Rain-safe7 days
  • Immersion-ready14 days

From Custom Building Products data sheet · checked 2026-10-24. Anything not listed isn’t stated by the manufacturer.

Conditions & fine print
  • Stated conditions: Keep above 50°F (10°C) for at least 72 hours
  • Keep above 50°F for at least 72 hours while it cures. Protect from heavy traffic until fully cured (no time given). No shower-ready time is published.
  • Temperature range: 50°F to 100°F
  • Region US. Formulas can differ between countries; check your container.
  • Rain-safe: Exterior installations
  • Entered from the manufacturer source; second review pending. Report outdated information
  • Actual results depend on preparation, thickness, ventilation, temperature, humidity, mixing and substrate.

Questions

How long before Polyblend Plus Sanded Grout is light foot traffic?

Custom Building Products states: Do not open to foot traffic before it has cured for 16 hours. This is the manufacturer’s stated time, not a guarantee.

How long before Polyblend Plus Sanded Grout is immersion-ready?

Custom Building Products states: Do not allow to be fully submerged for at least 14 days. This is the manufacturer’s stated time, not a guarantee.

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